US4850753A - Positive feed device - Google Patents
Positive feed device Download PDFInfo
- Publication number
- US4850753A US4850753A US07/152,827 US15282788A US4850753A US 4850753 A US4850753 A US 4850753A US 15282788 A US15282788 A US 15282788A US 4850753 A US4850753 A US 4850753A
- Authority
- US
- United States
- Prior art keywords
- idler gear
- shaft
- output
- gear
- control shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims description 5
- 241000282472 Canis lupus familiaris Species 0.000 description 17
- 238000005553 drilling Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/04—Arrangements preventing overload of tools, e.g. restricting load
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/32—Feeding working-spindles
- B23Q5/326—Feeding working-spindles screw-operated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/2018—Screw mechanisms with both screw and nut being driven, i.e. screw and nut are both rotating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2081—Parallel arrangement of drive motor to screw axis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/18—Cutting by use of rotating axially moving tool with stopping upon completion of prescribed operation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/65—Means to drive tool
- Y10T408/675—Means to drive tool including means to move Tool along tool-axis
- Y10T408/6793—Screw coaxial with Tool
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/68—Tool or tool-support with thrust-applying machine-engaging screw
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19642—Directly cooperating gears
- Y10T74/1966—Intersecting axes
- Y10T74/19665—Bevel gear type
Definitions
- This invention relates to a positive feed device, in particular for a power tool such as a drill driven by a pneumatic motor.
- the invention provides a positive feed device comprising: an input shaft: an output shaft; a gear train between the said shaft, including an intermediate gear and an output gear which is arranged to rotate with the output shaft but through which the output shaft is freely movable axially; an idler gear on a control shaft coaxial with the intermediate gear; a nut threaded on the output shaft and kinematically connected to the idler gear; first clutch means between the idler gear and the intermediate gear and second clutch means between the idler gear and a fixed member, the control shaft and the idler gear being axially movable between a first position, in which only the first clutch means is engaged, and a second position, in which only the second clutch means is engaged; the gearing ratios between the intermediate gear and the output gear and between the idler gear and the nut being such that, when the idler gear is in the first position, the nut rotates relative to the output shaft, thereby causing the output shaft to be fed in a first direction; the output shaft being fed in the opposite, second direction when the idle
- the disengagement means may comprise an actuating element acting on the control shaft and/or may be constituted by the first clutch means in the form of a torque-sensitive clutch.
- the invention also provides a power tool comprising a drive assembly having an output and a positive feed device having an input, the drive assembly and the positive feed device being selectively connectable together (a) directly, so that the output and the input are in line, and (b) via an angle transmission unit, so that the output and the input are at an angle (e.g. 90°0 ).
- FIG. 1 is a side elevational view of a positive feed drill of the invention
- FIG. 2 is a side elevational view of part of the drill of the invention
- FIG. 3 is an enlarged axial cross-sectional view through the positive feed device of the drill of the invention.
- FIG. 4 is a side elevational view of an alternative embodiment of drill of the invention.
- FIG. 5 is a schematic view which diagrammatically illustrates a detail of the positive feed device.
- FIG. 5 is a view similar to FIG. 5 which
- the positive feed drill illustrated in FIGS. 1 to 3 comprises a drive assembly 1 connected to a positive feed device 2.
- the drive assembly 1 is a known unit comprising a pneumatic motor 3 with a start button 4 and a stop button 6, and a gearbox 7.
- the output of the drive assembly 1 is connected to an input shaft 8 of the positive feed device 2 by means of a shear pin 9.
- the input shaft 8 carries an input gear 11 which drives an intermediate gear 12 which, in turn, drives an output gear 13 splined on an output shaft 14 having an attachment 16 for a drill chuck.
- the intermediate gear 12 has dogs 17 which engage with dogs 18 on an idler gear 19 which, in turn, engages a gear in the form of a nut 21 threaded on a left-handed screwthread formed on the output shaft 14.
- the gearing ratios between the intermediate gear 12 and the output gear 13 and between the idler gear 19 and the nut 21 are such that the nut 21 turns faster than the output shaft 14 and therefore causes it to move to the right at a given feed rate.
- the idler gear 19 is mounted on a control shaft 22 spigotted in the intermediate gear 12 and supported at its other end by a fixed member 23 having dogs 24 which are to engage with corresponding dogs 26 on the idler gear 19.
- the dogs 24,26 may be square or, preferably, angled to facilitate engagement and disengagement.
- the casing 27 of the positive feed device defines a chamber 28 which is connected to the air supply of the motor 3 via an inlet 29 and a pipe 31.
- the chamber 28 contains a main piston 32 which, in turn, contains an auxiliary piston 33 having a piston rod 34 which extends into the shaft 22 and which has a tapered end portion 36.
- the rod 34 causes a set of balls 37 (held in apertures in the shaft 22) to act on a bevelled surface 35 of the idler gear 19 so as to keep its dogs 18 in engagement with the dogs 17 of the intermediate gear 12.
- the start button 4 When the drill is to be re-started, the start button 4 is pressed and air pressure is communicated to the chamber 28, thereby urging the pistons 32,33 to the left.
- the tapered end portion 36 of the piston rod 34 acts on the balls 37 which, in turn, act on the bevelled surface 35 of the idler gear 19, urging it to the left until its dogs 18 intercalate with the dogs 17 of the intermediate gear 12. Thereafter, the balls 37 rest on the cylindrical surface of the piston rod 34 and cannot be pushed inwards by the idler gear 19.
- the operating cycle then continues as described above. Since reversal and stopping of the drill are automatic, an operator can control a number of drills at the same time. He can at any time stop the drill by pressing the stop button 6 or reverse the feed direction by pressing an extension 53 of the lever 39.
- the rear end of the shaft 14 is covered by a guard 54.
- FIG. 4 shows the drive assembly 1 connected to the positive feed device 2 via an angle head 56. This option is particularly useful when operating in restricted spaces.
- abutting surfaces 17a, 18a are preferably arranged at a negative angle, i.e. the dogs are undercut, as shown in FIG. 5.
- the abutting surfaces 17a17b with a positive angle, i.e. to bevel the dogs, as shown in FIG. 6, so that the dogs then function as a torque sensitive clutch, pushing the idler gear 19 to the right if the torque exceeds a given value, thereby protecting the bit from damage.
- Such an arrangement can, of course, replace the lever 39, since the torque will rise rapidly as the collar 38 comes up against the housing of the positive feed device 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structure Of Transmissions (AREA)
- Gear Transmission (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
Description
Claims (14)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB868620690A GB8620690D0 (en) | 1986-08-27 | 1986-08-27 | Positive feed device |
Publications (1)
Publication Number | Publication Date |
---|---|
US4850753A true US4850753A (en) | 1989-07-25 |
Family
ID=10603248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/152,827 Expired - Fee Related US4850753A (en) | 1986-08-27 | 1988-02-05 | Positive feed device |
Country Status (4)
Country | Link |
---|---|
US (1) | US4850753A (en) |
DE (1) | DE3742725A1 (en) |
FR (1) | FR2625698B1 (en) |
GB (2) | GB8620690D0 (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5022800A (en) * | 1990-07-09 | 1991-06-11 | P.V. Tool, Inc. | Rapid advance feed drill with idle mode |
US5556241A (en) * | 1995-01-25 | 1996-09-17 | Hipwell; Roger L. | Quick stop device |
WO2000078490A2 (en) * | 1999-06-18 | 2000-12-28 | Cooper Technologies Company | Positive feed tool having a clutch |
WO2000078502A2 (en) * | 1999-06-18 | 2000-12-28 | Cooper Technologies Company | Positive feed tool having retractable members |
FR2829952A1 (en) * | 2001-09-25 | 2003-03-28 | Recoules | Pneumatic stamping press for aeronautical components has pair of drive couplings between motor and output shaft to drive tool carrying spindle |
US20060018724A1 (en) * | 2004-07-23 | 2006-01-26 | Cooper Power Tools Sas | Positive-feed machine tool permitting a clearing operation |
US20080260485A1 (en) * | 2007-04-17 | 2008-10-23 | Cooper Power Tools Sas | Machine Tool |
US20090074525A1 (en) * | 2006-10-27 | 2009-03-19 | Cooper Power Tools Sas | Process for Drilling a Bore and Corresponding Tool |
US20090245955A1 (en) * | 2008-03-27 | 2009-10-01 | Cooper Power Tools Sas | Processing Machine Having Positive Feed and Processing Method |
US20100111626A1 (en) * | 2008-10-31 | 2010-05-06 | Cooper Industries | Cushion mechanism for a positive peck feed drill |
US20100119316A1 (en) * | 2008-09-18 | 2010-05-13 | Cooper Power Tools Sas | Processing Machine and Associated Processing Method |
CN102357829A (en) * | 2011-09-16 | 2012-02-22 | 蚌埠天地重型机械制造股份有限公司 | Feed box of boring-milling machine |
US20140193217A1 (en) * | 2013-01-09 | 2014-07-10 | Seti-Tec | Dual-Motor Drilling Machine with Controlled Feed Speed |
US20140290974A1 (en) * | 2011-11-04 | 2014-10-02 | Atlas Copco Industrial Technique Ab | Drive arrangement in a pneumatic power tool |
CN105189037A (en) * | 2013-02-26 | 2015-12-23 | 艾沛克斯品牌公司 | Positive feed tool with a slip clutch and a method, to prevent jamming |
US10427258B2 (en) | 2014-08-20 | 2019-10-01 | Apex Brands, Inc. | Positive feed tool with improved shift from forward to retract |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2248566A (en) * | 1990-10-01 | 1992-04-15 | Cooper Ind Inc | Retracting power tool drive spindle |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462647A (en) * | 1948-04-21 | 1949-02-22 | Charles A Koza | Angle drill |
US2604795A (en) * | 1950-03-08 | 1952-07-29 | Milwaukee Electric Tool Corp | Angular drive |
US3487729A (en) * | 1967-12-06 | 1970-01-06 | Zephyr Mfg Co | Positive depth control drill |
US3574290A (en) * | 1968-12-16 | 1971-04-13 | Dresser Ind | Tool actuating device |
US3583822A (en) * | 1968-10-31 | 1971-06-08 | Rockwell Mfg Co | Portable power tool |
US3901098A (en) * | 1973-12-17 | 1975-08-26 | Dotco Inc | Angle drive unit |
US4592681A (en) * | 1983-10-31 | 1986-06-03 | Dresser Industries, Inc. | Retraction apparatus for automatic feed drills or the like |
US4681490A (en) * | 1983-10-31 | 1987-07-21 | Dresser Industries, Inc. | Retraction apparatus for automatic feed drills or the like |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2893272A (en) * | 1957-03-18 | 1959-07-07 | Buckeye Tools Corp | Automatic tool |
US3429206A (en) * | 1966-08-08 | 1969-02-25 | Robert C Quackenbush | Right angle positive feed device |
US3885635A (en) * | 1974-04-19 | 1975-05-27 | Bendix Corp | Two-speed mechanical quill feed and spindle drive mechanism for a machine tool |
GB1554169A (en) * | 1976-08-19 | 1979-10-17 | Newbould G | Positive feed drill |
CA1157686A (en) * | 1980-07-31 | 1983-11-29 | Klaus R. Menzel | Mechanical quill having selective braking capability |
-
1986
- 1986-08-27 GB GB868620690A patent/GB8620690D0/en active Pending
-
1987
- 1987-01-28 GB GB8701897A patent/GB2195164B/en not_active Expired - Lifetime
- 1987-12-17 DE DE19873742725 patent/DE3742725A1/en not_active Ceased
-
1988
- 1988-01-08 FR FR8800514A patent/FR2625698B1/en not_active Expired - Fee Related
- 1988-02-05 US US07/152,827 patent/US4850753A/en not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462647A (en) * | 1948-04-21 | 1949-02-22 | Charles A Koza | Angle drill |
US2604795A (en) * | 1950-03-08 | 1952-07-29 | Milwaukee Electric Tool Corp | Angular drive |
US3487729A (en) * | 1967-12-06 | 1970-01-06 | Zephyr Mfg Co | Positive depth control drill |
US3583822A (en) * | 1968-10-31 | 1971-06-08 | Rockwell Mfg Co | Portable power tool |
US3574290A (en) * | 1968-12-16 | 1971-04-13 | Dresser Ind | Tool actuating device |
US3901098A (en) * | 1973-12-17 | 1975-08-26 | Dotco Inc | Angle drive unit |
US4592681A (en) * | 1983-10-31 | 1986-06-03 | Dresser Industries, Inc. | Retraction apparatus for automatic feed drills or the like |
US4681490A (en) * | 1983-10-31 | 1987-07-21 | Dresser Industries, Inc. | Retraction apparatus for automatic feed drills or the like |
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5022800A (en) * | 1990-07-09 | 1991-06-11 | P.V. Tool, Inc. | Rapid advance feed drill with idle mode |
US5556241A (en) * | 1995-01-25 | 1996-09-17 | Hipwell; Roger L. | Quick stop device |
WO2000078490A2 (en) * | 1999-06-18 | 2000-12-28 | Cooper Technologies Company | Positive feed tool having a clutch |
WO2000078502A2 (en) * | 1999-06-18 | 2000-12-28 | Cooper Technologies Company | Positive feed tool having retractable members |
US6196772B1 (en) | 1999-06-18 | 2001-03-06 | Cooper Technologies Company | Positive feed tool having a clutch |
US6261033B1 (en) | 1999-06-18 | 2001-07-17 | Cooper Technologies Company | Positive feed tool having rectractable members |
WO2000078502A3 (en) * | 1999-06-18 | 2001-07-19 | Cooper Technologies Co | Positive feed tool having retractable members |
WO2000078490A3 (en) * | 1999-06-18 | 2002-10-03 | Cooper Technologies Co | Positive feed tool having a clutch |
FR2829952A1 (en) * | 2001-09-25 | 2003-03-28 | Recoules | Pneumatic stamping press for aeronautical components has pair of drive couplings between motor and output shaft to drive tool carrying spindle |
US7806637B2 (en) | 2004-07-23 | 2010-10-05 | Cooper Power Tools Sas | Positive-feed machine tool permitting a clearing operation |
US20060018724A1 (en) * | 2004-07-23 | 2006-01-26 | Cooper Power Tools Sas | Positive-feed machine tool permitting a clearing operation |
US20090022555A1 (en) * | 2004-07-23 | 2009-01-22 | Cooper Power Tools Sas | Positive-Feed Machine Tool Permitting a Clearing Operation |
US20090074525A1 (en) * | 2006-10-27 | 2009-03-19 | Cooper Power Tools Sas | Process for Drilling a Bore and Corresponding Tool |
US8469641B2 (en) | 2006-10-27 | 2013-06-25 | Cooper Power Tools Sas | Process for drilling a bore and corresponding tool |
US8388276B2 (en) | 2007-04-07 | 2013-03-05 | Cooper Power Tools Sas | Machine tool |
US20080260485A1 (en) * | 2007-04-17 | 2008-10-23 | Cooper Power Tools Sas | Machine Tool |
US20090245955A1 (en) * | 2008-03-27 | 2009-10-01 | Cooper Power Tools Sas | Processing Machine Having Positive Feed and Processing Method |
US8469640B2 (en) | 2008-03-27 | 2013-06-25 | Cooper Power Tools Sas | Processing machine having positive feed and processing method |
US20100119316A1 (en) * | 2008-09-18 | 2010-05-13 | Cooper Power Tools Sas | Processing Machine and Associated Processing Method |
US8388282B2 (en) | 2008-09-18 | 2013-03-05 | Cooper Power Tools Sas | Processing machine and associated processing method |
US20100111626A1 (en) * | 2008-10-31 | 2010-05-06 | Cooper Industries | Cushion mechanism for a positive peck feed drill |
CN102357829A (en) * | 2011-09-16 | 2012-02-22 | 蚌埠天地重型机械制造股份有限公司 | Feed box of boring-milling machine |
US9751177B2 (en) * | 2011-11-04 | 2017-09-05 | Atlas Copco Industrial Technique Ab | Drive arrangement in a pneumatic power tool |
US20140290974A1 (en) * | 2011-11-04 | 2014-10-02 | Atlas Copco Industrial Technique Ab | Drive arrangement in a pneumatic power tool |
JP2015501227A (en) * | 2011-11-04 | 2015-01-15 | アトラス・コプコ・インダストリアル・テクニーク・アクチボラグ | Pneumatic power tool drive device |
US20140193217A1 (en) * | 2013-01-09 | 2014-07-10 | Seti-Tec | Dual-Motor Drilling Machine with Controlled Feed Speed |
US9387541B2 (en) * | 2013-01-09 | 2016-07-12 | Seti-Tec | Dual-motor drilling machine with controlled feed speed |
US20160001436A1 (en) * | 2013-02-26 | 2016-01-07 | Apex Brands, Inc. | Positive Feed Tool with a Modular Architecture |
US20160001408A1 (en) * | 2013-02-26 | 2016-01-07 | Apex Brands, Inc. | Positive Feed Tool with Improved Shift from Forward to Retract |
US9604334B2 (en) | 2013-02-26 | 2017-03-28 | Apex Brands, Inc. | Positive feed tool with a slip clutch and a method, to prevent jamming |
US9662756B2 (en) * | 2013-02-26 | 2017-05-30 | Apex Brands, Inc. | Positive feed tool with improved shift from forward to retract |
US9707654B2 (en) * | 2013-02-26 | 2017-07-18 | Apex Brands, Inc. | Positive feed tool with a modular architecture |
CN105189037A (en) * | 2013-02-26 | 2015-12-23 | 艾沛克斯品牌公司 | Positive feed tool with a slip clutch and a method, to prevent jamming |
US9808896B2 (en) | 2013-02-26 | 2017-11-07 | Apex Brands, Inc. | Positive feed tool with a modular architecture |
US10427258B2 (en) | 2014-08-20 | 2019-10-01 | Apex Brands, Inc. | Positive feed tool with improved shift from forward to retract |
Also Published As
Publication number | Publication date |
---|---|
DE3742725A1 (en) | 1989-07-06 |
FR2625698A1 (en) | 1989-07-13 |
FR2625698B1 (en) | 1994-05-20 |
GB8620690D0 (en) | 1986-10-08 |
GB2195164B (en) | 1990-03-21 |
GB2195164A (en) | 1988-03-30 |
GB8701897D0 (en) | 1987-03-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DESOUTTER LIMITED, 319 EDGWARE ROAD, COLINDALE, LO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:DUDDEN, CHRISTOPHER J.;REEL/FRAME:004861/0263 Effective date: 19880114 Owner name: DESOUTTER LIMITED, GREAT BRITAIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DUDDEN, CHRISTOPHER J.;REEL/FRAME:004861/0263 Effective date: 19880114 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Expired due to failure to pay maintenance fee |
Effective date: 19970730 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |